This column appears in the Nevada Appeal Wednesday health pages. It addresses topics related to the health of our community.Hand, foot, and mouth disease is a common illness of infants and children younger than age 5 and can sometimes affect older children and even adults. While the disease is not often serious, it is never fun when young children are sick. HFMD is very contagious, and it can spread rapidly among children who often touch and spread germs directly and onto surfaces like doorknobs. Hand, foot and mouth disease symptoms usually include fever, followed after a day or several days …